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A teacher wants to know how well the students in her gifted class perform relative to her other classes. She administers a standardized test to all of her classes, which has a mean of 50 (SD = 10). Her gifted class of 31 students has an average score of 55. She want to know what percent of all of her classes score lower than her gifted class.
Need to write the results
The Mean and Median applet allows you to place observations on a line and see their mean and median visually. Place two observations on the line by clicking.
Biology and Environmental Science During the summer months, wildfires in the western United States pose a great hazard to people, residential and commercial.
What errors can occur while performing a serial dilution / direct plate counting method?
In 1965, a newspaper carried a story about a high school student who reported getting 9207 heads and 8743 tails in 17,950 coin tosses. Is this a significant discrepancy from the null hypothesis H 0 = 1/2.
Conduct the hypothesis tests to check for effects due to interaction, factor A, and factor B. Use a = 0.05 for each test. State your conclusions.
a newspaper article about the results of a poll states in theory the results of such a poll in 99 cases out of 100
Describe how the study could be done using a matched pair design.- Explain why a matched-pair design is a good idea in this situation.
In a study to compare the perceived effects of two pain relievers, 200 randomly selected adults were given the first pain reliever, and 93% indicated appreciable pain relief. Of the 450 individuals given the other pain reliever, 96% indicated expe..
A certain state lottery awards 418 prizes; 28-$200 prizes, 120-$25 prizes and 270-$20 prizes, for every 10,000 tickets sold.
At a fancy restaurant n students check their backpacks. They are the only ones to check backpacks. A child visits the checkroom and plays with the check tickets
Test at a 95% confidence interval. What is the Hypotheses and indicate what is the sample proportion. What is the P-value and, in turn, what is your conclusion?
At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
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